[DevTools] Do not talk to inspector overlay from outside

third_party/WebKit/Source/web/WebFrameWidgetImpl.h

Index: third_party/WebKit/Source/web/WebFrameWidgetImpl.h
diff --git a/third_party/WebKit/Source/web/WebFrameWidgetImpl.h b/third_party/WebKit/Source/web/WebFrameWidgetImpl.h
index 0709277e87404ad13d0c4083b8c0c66d5738c800..93f970a7e8ce61bce10b5f9465bb1c0dd9f5d55f 100644
--- a/third_party/WebKit/Source/web/WebFrameWidgetImpl.h
+++ b/third_party/WebKit/Source/web/WebFrameWidgetImpl.h
@@ -51,7 +51,6 @@ namespace blink {
 class CompositorAnimationHost;
 class Frame;
 class Element;
-class InspectorOverlayAgent;
 class LocalFrame;
 class PaintLayerCompositor;
 class UserGestureToken;
@@ -184,8 +183,6 @@ class WebFrameWidgetImpl final
   WebInputEventResult HandleKeyEvent(const WebKeyboardEvent&) override;
   WebInputEventResult HandleCharEvent(const WebKeyboardEvent&) override;
 
-  InspectorOverlayAgent* GetInspectorOverlay();
-
   // This method returns the focused frame belonging to this WebWidget, that
   // is, a focused frame with the same local root as the one corresponding
   // to this widget. It will return nullptr if no frame is focused or, the